Quick answers
- Does Sheila Sneddon accept Medicare assignment?
- Yes. Medicare's clinician data says Sheila Sneddon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Sheila Sneddon see?
- In 2024, CMS data shows 285 Original Medicare patients and 517 services for Sheila Sneddon. This counts Original Medicare only and measures volume, not quality.
- What is Sheila Sneddon's NPI number?
- 1659434926. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sheila Sneddon, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 285 |
|---|---|
| Services billed to Medicare | 517 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient complete exam of visual system (92014)302 services
- Imaging of retina (92134)60 services
- New patient complete exam of visual system (92004)53 services
- Exam of visual field with extended testing (92083)27 services
- Extended exam of the back part of the eye with optic nerve drawing (92202)24 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol72%
- Arthritis42%
- Diabetes39%
- Anxiety32%
- COPD28%
Practice locations
Addresses where Sheila Sneddon is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1102 N Main StBenton, IL 62812 (618) 439‑2020
- 1200 W Deyoung StMarion, IL 62959 (618) 993‑5686
- 1201 W Main StCarmi, IL 62821 (618) 384‑5112
- 1204 US 45Eldorado, IL 62930 (618) 273‑6220
- 2900 Broadway St, AMount Vernon, IL 62864 (618) 244‑2777
Group practices
Medicare enrollment lists Sheila Sneddon as a member of this group (CMS data updated October 2, 2026).
- Marion Eye Centers Ltd39 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Marion Eye Centers Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Illinois College Of Optometry At Chicago |
| Graduation year | 2003 (23 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659434926 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians